Scheduling time offset for non-terrestrial networks
A method by a user equipment (UE) includes receiving at least one time offset for scheduling non-terrestrial communications. The at least one first time offset is configured according to a numerology and/or a bandwidth part (BWP). The UE communicates in accordance with the time offset(s). The time offset may be a single time offset that applies across all numerologies or may be multiple time offsets, each specific to a particular numerology or bandwidth part (BWP). The time offset may be a single time offset scaled based on a current numerology configured for communications. The time offset may apply across different bandwidth parts (BWPs) or across multiple component carriers from which the UE is receiving downlink data.
1. A method of wireless communication at a user equipment (UE), comprising:
receiving, via at least broadcast non-terrestrial network (NTN) system information, at-a single NTN time offset;
scaling the single NTN time offset according to at least one of a first numerology or a bandwidth part (BWP) to generate a single scaled numerology specific NTN time offset by applying at least one of a ceiling operation or a floor operation, the first numerology corresponding to a first subcarrier spacing (SCS); and
communicating in a non-terrestrial network and in accordance with the single scaled numerology specific NTN time offset, the single scaled numerology specific NTN time offset differing from a second scaled numerology specific NTN time offset associated with a second UE configured with a second numerology different than the first numerology.
2. The method of claim 1 , wherein the single NTN time offset applies across all numerologies including the first numerology.
3. The method of claim 1 , wherein the single NTN time offset comprises a first time offset specific to the first numerology and the method further comprises receiving a second time offset specific to the second numerology.
4. The method of claim 1 , wherein the single NTN time offset comprises a first time offset specific to a first bandwidth part (BWP) and the UE further receives a second time offset specific to a second BWP.
5. The method of claim 1 , wherein communicating in accordance with the single scaled numerology specific NTN time offset comprises communicating in accordance with the single scaled numerology specific NTN time offset across a plurality of different bandwidth parts (BWPs) corresponding to common system information.
6. The method of claim 1 , wherein the single NTN time offset further comprises at least one NTN time offset associated with each component carrier from which the UE is receiving downlink data.
7. The method of claim 6 , further comprising transmitting an uplink transmission on an uplink component carrier based on the single scaled numerology specific NTN time offset, which is associated with a primary downlink component carrier.
8. The method of claim 6 , further comprising transmitting an uplink transmission on an uplink component carrier based on a maximum time offset across all aggregated downlink component carriers.
9. The method of claim 6 , wherein the single NTN time offset associated with each component carrier comprises at least one of a single scaled time offset, a numerology agnostic time offset, a bandwidth part specific time offset, or a numerology specific time offset.
10. The method of claim 8 , wherein the maximum time offset comprises a maximum time offset for each numerology.
11. The method of claim 1 , further comprising receiving dedicated radio resource control (RRC) signaling for the single NTN time offset.
12. An apparatus for wireless communications, comprising: at least one processor; and at least one memory comprising instructions executable by the at least one processor to cause the apparatus to: receive, via at least broadcast non-terrestrial network (NTN) system information, a single NTN time offset; scale the single NTN time offset according to at least one of a first numerology or a bandwidth part (BWP) to generate a single scaled numerology specific NTN time offset by applying at least one of a ceiling operation or a floor operation, the first numerology corresponding to a first subcarrier spacing (SCS); and communicate in a non-terrestrial network and in accordance with the single scaled numerology specific NTN time offset, the single scaled numerology specific NTN time offset differing from a second scaled numerology specific NTN time offset associated with a second user equipment (UE) configured with a second numerology different than the first numerology.
13. The apparatus of claim 12 , wherein the single NTN time offset applies across all numerologies including the first numerology.
14. The apparatus of claim 12 , wherein the single NTN time offset comprises a first time offset specific to the first numerology and the at least one processor is further configured to receive a second time offset specific to the second numerology.
15. The apparatus of claim 12 , wherein the single NTN time offset comprises a first time offset specific to a first bandwidth part (BWP) and the at least one processor is further configured to receive a second time offset specific to a second BWP.
16. The apparatus of claim 12 , wherein the at least one processor is configured to cause the apparatus to communicate in accordance with the single scaled numerology specific NTN time offset across a plurality of different bandwidth parts (BWPs) corresponding to common system information.
17. The apparatus of claim 12 , wherein the single NTN time offset further comprises at least one NTN time offset associated with each component carrier from which the apparatus is receiving downlink data.
18. The apparatus of claim 17 , further comprising a transceiver configured to transmit an uplink transmission on an uplink component carrier based on the single-NTN time offset, which is associated with a primary downlink component carrier, wherein the apparatus is configured as a user equipment (UE).
19. The apparatus of claim 17 , further comprising a transceiver configured to transmit an uplink transmission on an uplink component carrier based on a maximum time offset across all aggregated downlink component carriers, wherein the apparatus is configured as a user equipment (UE).
20. The apparatus of claim 17 , wherein the single-NTN time offset associated with each component carrier comprises at least one of a single scaled time offset, a numerology agnostic time offset, a bandwidth part specific time offset, or a numerology specific time offset.
21. The apparatus of claim 19 , wherein the maximum time offset comprises a maximum time offset for each numerology.
22. The apparatus of claim 12 , wherein the at least one processor is further configured to cause the apparatus to receive dedicated radio resource control (RRC) signaling for the single NTN time offset.
23. A user equipment (UE), comprising:
at least one transceiver; at least one processor; and at least one memory comprising instructions executable by the at least one processor to cause the apparatus to:
receive, via at least broadcast non-terrestrial network (NTN) system information, a single NTN time offset,
said reception occurring via the transceiver; scale the single NTN time offset according to at least one of a first numerology or a bandwidth part (BWP) to generate a single scaled numerology specific NTN time offset by applying at least one of a ceiling operation or a floor operation, the first numerology corresponding to a first subcarrier spacing (SCS); and
communicate in a non-terrestrial network and in accordance with the single scaled numerology specific NTN time offset, the single scaled numerology specific NTN time offset differing from a second scaled numerology specific NTN time offset associated with a second UE configured with a second numerology different than the first numerology, said communicating occurring via the transceiver.
24. The UE of claim 23 , wherein the single NTN time offset applies across all numerologies including the first numerology.
25. The UE of claim 23 , wherein the at least one processor is further configured to cause the UE to receive dedicated radio resource control (RRC) signaling for the single NTN time offset.
26. The UE of claim 23 , wherein the single at least one NTN time offset comprises a first time offset specific to the first numerology and the at least one processor is further configured to cause the UE to receive a second time offset specific to the second numerology.
27. The UE of claim 23 , wherein the single at least one NTN time offset comprises a first time offset specific to a first bandwidth part (BWP) and the at least one processor is further configured to cause the UE to receive a second time offset specific to a second BWP.